I say go ahead with the debates. But drop the very biased Commission on Presidential Debates.
Instead let the Democrat candidate pick two moderators. And let the Republican candidate do the same. As for the length of each debate, etc. let the four moderators decide that. They should be able to come to an arrangement.
The problem is, the Democrat candidate could pick with his eyes closed and be assured of 100% bias support whereas Trump’s chances would be less than 50% .. even with his eyes open!